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    <body><span class="vcard"><a class="email" href="mailto:cdumez&#64;apple.com" title="Chris Dumez &lt;cdumez&#64;apple.com&gt;"> <span class="fn">Chris Dumez</span></a>
</span> changed
          <a class="bz_bug_link 
          bz_status_RESOLVED  bz_closed"
   title="RESOLVED INVALID - Input type=range does not support validation using pattern attribute"
   href="https://bugs.webkit.org/show_bug.cgi?id=169983">bug 169983</a>
          <br>
             <table border="1" cellspacing="0" cellpadding="8">
          <tr>
            <th>What</th>
            <th>Removed</th>
            <th>Added</th>
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         <tr>
           <td style="text-align:right;">Status</td>
           <td>NEW
           </td>
           <td>RESOLVED
           </td>
         </tr>

         <tr>
           <td style="text-align:right;">Resolution</td>
           <td>---
           </td>
           <td>INVALID
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            <b><a class="bz_bug_link 
          bz_status_RESOLVED  bz_closed"
   title="RESOLVED INVALID - Input type=range does not support validation using pattern attribute"
   href="https://bugs.webkit.org/show_bug.cgi?id=169983#c2">Comment # 2</a>
              on <a class="bz_bug_link 
          bz_status_RESOLVED  bz_closed"
   title="RESOLVED INVALID - Input type=range does not support validation using pattern attribute"
   href="https://bugs.webkit.org/show_bug.cgi?id=169983">bug 169983</a>
              from <span class="vcard"><a class="email" href="mailto:cdumez&#64;apple.com" title="Chris Dumez &lt;cdumez&#64;apple.com&gt;"> <span class="fn">Chris Dumez</span></a>
</span></b>
        <pre>(In reply to Chris Dumez from <a href="show_bug.cgi?id=169983#c1">comment #1</a>)
<span class="quote">&gt; Tried the example in Safari / Chrome and Firefox and it did not seem to work
&gt; in any of them?</span >

And according to the HTML spec, the pattern attribute does not apply to input elements of type range:
- <a href="https://html.spec.whatwg.org/multipage/forms.html#do-not-apply">https://html.spec.whatwg.org/multipage/forms.html#do-not-apply</a></pre>
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